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JP6921651B2 |
An electrophotographic photosensitive member includes an electroconductive support member and a photosensitive layer. The uppermost layer of the electrophotographic photosensitive member defines a surface layer, and the surface layer con...
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JP6922587B2 |
To provide an electrophotographic photoreceptor that prevents the occurrence of an unintended color point in an image formed after repetition of image formation, while preventing an afterimage phenomenon in an image formed at a high proc...
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JP6922679B2 |
To provide an electrophotographic photoreceptor, a method for manufacturing the electrophotographic photoreceptor, an electrophotographic image forming method, and an electrophotographic image forming apparatus that can prevent occurrenc...
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JP6918663B2 |
There is provided an electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus in which residual potential is suppressed and a ghost image is prevented from being generated in a low-humidity envi...
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JP6918550B2 |
Provided is an electrophotographic photosensitive member that can suppress a ghost image while keeping its sensitivity satisfactory. The electrophotographic photosensitive member includes a support, an intermediate layer on the support, ...
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JP6918766B2 |
An image forming apparatus includes a photoconductor including a charge generation layer; a charging member to charge a surface of the photoconductor; and an exposure unit to expose the surface of the photoconductor to form a toner image...
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JP2021117377A |
To provide an electrophotographic photoreceptor with a photosensitive layer that suppresses electrical potential fluctuation during long-term repeated use, a process cartridge employing such electrophotographic photoreceptor, and an elec...
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JP2021117392A |
To provide an image forming apparatus that can reduce the occurrence of an image defect in a print, while preventing deterioration of a peripheral surface of an image carrier.An image forming apparatus 1 comprises: an image carrier; an e...
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JP2021113901A |
To provide an electronic device that has a metal oxide film on its surface, the electronic device capable of minute photoelectric conversion.An electronic device has a support, a charge transport layer including a charge transport materi...
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JP6912934B2 |
A coating film of a coating liquid for a surface layer, the coating liquid containing a hole transporting compound having a chain-polymerizable functional group and a compound having a specified structure, is cured to thereby form a surf...
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JP6914727B2 |
An electrophotographic photosensitive member includes a surface layer containing a charge transporting material and a specific polyester resin having a structure including a specific branched chain.
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JP2021110840A |
To provide an electrophotographic photoreceptor, a method for manufacturing the same, and a method for managing the same with which management by individual identification can be performed in detail during both manufacture and assembly o...
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JP2021110804A |
To provide an electrophotographic photoreceptor that has high wear resistance.An electrophotographic photoreceptor has a conductive substrate, and a single layer-type photosensitive layer that is provided on the conductive substrate, the...
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JP2021107889A |
To provide an electrophotographic photosensitive member that can suppress a potential variation under a high-temperature and high-humidity environment.An electrophotographic photosensitive member includes a conductive substrate, and a mo...
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JP2021107887A |
To provide an electrophotographic photosensitive member with a monolayer type photosensitive layer, where the electrophotographic photosensitive member can suppress a potential variation under a high-temperature and high-humidity environ...
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JP6908989B2 |
To provide a photoreceptor that can reduce ununiform film thinning at the ends while maintaining high cleaning performance, and an image forming apparatus that includes such a photoreceptor and can form high-quality images for a long per...
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JP2021105715A |
To provide an image forming apparatus that can suppress scattering of toner, while improving low-temperature fixability, a process cartridge, and a cartridge set.There is provided an image forming apparatus that has an electrophotographi...
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JP2021105714A |
To provide an image forming apparatus that is excellent in low-temperature fixability and can obtain a high-definition image that has prevented a transfer hollow defect.There is provided an image forming apparatus that has an electrophot...
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JP6904668B2 |
To provide an electrophotographic photoreceptor that has reduced a positive ghost even after a repeated use.An electrophotographic photoreceptor comprises an undercoat layer that contains a polymer of a composition including a compound r...
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JP6907878B2 |
To provide an electrophotographic photoreceptor that can inhibit the occurrence of transfer memory.An electrophotographic photoreceptor comprises a conductive substrate and a photosensitive layer. The photosensitive layer is a single lay...
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JP6899578B2 |
To provide an electron transport material having excellent solubility in an organic solvent and an electron transporting ability with good sensitivity and containing a pyrazole derivative that can be industrially easily and safely produc...
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JP2021098182A |
To provide a coating dryer which can effectively inhibit sagging and unevenness of a paint film to form a uniform paint film, and to provide a coating dry method.A coating dryer of the present invention has a coating part which applies a...
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JP2021098183A |
To provide a coating dryer which can effectively inhibit sagging and unevenness of a paint film to form a uniform paint film, and to provide a coating dry method.A coating dryer of the present invention has a coating part which applies a...
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JP6896386B2 |
To provide an electrophotographic photoreceptor having a support body and a photosensitive layer on the support body, which has excellent electric characteristics and excellent abrasion resistance and is excellent in image deletion suppr...
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JP6896556B2 |
The present invention provides: an electrophotographic photosensitive member which can achieve both of abrasion resistance and electrical characteristics; a production method of the electrophotographic photosensitive member; and a proces...
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JP2021096343A |
To provide an electrophotographic photoreceptor that prevents an increase in residual potential.An electrophotographic photoreceptor has a conductive substrate and a photosensitive layer provided on the conductive substrate. An outermost...
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JP6893205B2 |
A polycarbonate resin has a structure represented by a formula (1) and a yellow index (YI) of 30 or less in a solid form,
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JP6891857B2 |
The invention provides a photoreceptor manufacturing method, a coating liquid, a photoreceptor, and an image forming apparatus. A method of manufacturing an electrographic photoreceptor provided witha conductive substrate and a single-la...
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JP6891578B2 |
To provide an electrophotographic photoreceptor that includes a single-layer photosensitive layer, has high sensitivity, and reduces a difference in sensitivity due to environment.An electrophotographic photoreceptor comprises: a conduct...
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JP6891856B2 |
A method for producing an electrophotographic photosensitive member (1) includes an electrically conductive substrate (2) and a photosensitive layer (3). The method includes applying an application liquid for photosensitive layer formati...
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JP6891443B2 |
To provide an electrophotographic photoreceptor that reduces an afterimage phenomenon occurring due to remaining of a history of a previous image.An electrophotographic photoreceptor comprises: a conductive substrate; an undercoat layer ...
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JP2021092632A |
To prevent high image quality from being impaired, in an electrophotographic device that has an electrophotographic photoreceptor having a photosensitive layer containing phthalocyanine-based charge generation agent, and exposure means w...
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JP6887928B2 |
A surface layer of an electrophotographic photosensitive member contains a cured product of a composition containing a hole transport compound having an acryloyloxy group or a methacryloyloxy group, and a compound having a specific struc...
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JP6885465B2 |
A single-layer photosensitive layer of an electrophotographic photosensitive member contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The charge generating material is a...
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JP6885469B2 |
This electrophotographic photosensitive body is provided with a conductive substrate and a photosensitive layer. The photosensitive layer is composed of a single layer. The photosensitive layer contains at least a charge generator and a ...
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JP6888517B2 |
To provide a polyarylate resin capable of increasing abrasion resistance of an electrophotographic photoreceptor when contained in a photosensitive layer.The polyarylate resin at least comprises a repeating unit represented by general fo...
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JP6883523B2 |
A bischloroformate composition is represented by a formula (1) below, contains a plurality of Ar components, and has an average number of monomer units (m1), which is calculated by an expression (Numerical Expression 1) below, ranging fr...
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JP6883201B2 |
To provide an electrophotographic photoreceptor that suppresses a change in charge potential.A positively charged electrophotographic photoreceptor comprises: a conductive substrate; a charge transport layer that is provided on the condu...
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JP6884547B2 |
To provide a manufacturing method of an electrophotographic photoreceptor using a coating liquid for a protective layer and the coating liquid for suppressing a photoreceptor surface defect generated at the time of coating and polymeriza...
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JP2021086127A |
To provide an electrophotographic photoreceptor which offers improved wear resistance and suppresses generation of while spots on images.An electrophotographic photoreceptor provided herein comprises a support body, and a single-layered ...
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JP2021085916A |
To solve the problem that when random variation in the film thickness of a voltage withstand layer occurs in the axial direction of a photoreceptor, an applied electric field in a reduced film thickness portion of the voltage withstand l...
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JP2021086044A |
To provide a cylindrical base body for an electro-photographic photoreceptor that can prevent film peeling from the end of the outer circumferential surface of the cylindrical base body while and after a deposition film is formed compare...
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JP6879071B2 |
To provide an electrophotographic photoreceptor that improves both adhesive properties and electrical characteristics of a charge transport layer, an electrophotographic cartridge using the same, and an image forming apparatus.In an elec...
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JP6879293B2 |
The present invention relates to a positively chargeable electrophotographic photoreceptor that has, on a conductive support, a single-layer type photosensitive layer which contains a binder resin, a compound (1) having a hole transport ...
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JP6881335B2 |
To provide a compound that improves the sensitivity of an electrophotographic photoreceptor and inhibits crystallization.The present invention provides a compound represented by general formula (1) (where Rand Rare a hydrogen atom, an al...
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JP2021081614A |
To solve the problem that if a withstand voltage layer of a photoreceptor having a deposition film by a plasma CVD method varies in film thickness, an applied electric field is intenser where the withstand voltage layer is thin in film t...
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JP2021081508A |
To provide an electrophotographic photoreceptor that is excellent in dispersion stability of an application liquid for a photosensitive layer and is excellent in wear resistance of the photosensitive layer.An electrophotographic photorec...
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JP2021081469A |
To provide an electrophotographic photoreceptor which offers superior charge transportability even when the photoreceptor contains fine fluorine resin particles in a surface layer thereof.An electrophotographic photoreceptor is provided,...
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JP2021076732A |
To prevent image defects due to film separation while forming a deposited film and image quality deterioration due to image defects.An electrophotographic photoreceptor is provided, comprising an undercoat layer and a photosensitive laye...
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JP2021076631A |
To provide an electrophotographic photoreceptor capable of preventing image defect-causing film separation while forming a deposited film, and to provide an electrophotographic device that offers higher image quality compared with conven...
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